WO2017049531A1 - Procédé et appareil de transmission de données - Google Patents

Procédé et appareil de transmission de données Download PDF

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Publication number
WO2017049531A1
WO2017049531A1 PCT/CN2015/090556 CN2015090556W WO2017049531A1 WO 2017049531 A1 WO2017049531 A1 WO 2017049531A1 CN 2015090556 W CN2015090556 W CN 2015090556W WO 2017049531 A1 WO2017049531 A1 WO 2017049531A1
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WIPO (PCT)
Prior art keywords
time
symbols
unit
length
transmitting
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PCT/CN2015/090556
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English (en)
Chinese (zh)
Inventor
李超君
马莎
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华为技术有限公司
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Priority to AU2015409983A priority Critical patent/AU2015409983A1/en
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20203015.1A priority patent/EP3840447B1/fr
Priority to BR112018005804-1A priority patent/BR112018005804B1/pt
Priority to CN202110187607.5A priority patent/CN113037447B/zh
Priority to RU2018114960A priority patent/RU2682916C1/ru
Priority to CN201580083025.5A priority patent/CN108029019B/zh
Priority to CN201910407100.9A priority patent/CN110224800B/zh
Priority to EP15904418.9A priority patent/EP3343969B1/fr
Priority to PCT/CN2015/090556 priority patent/WO2017049531A1/fr
Publication of WO2017049531A1 publication Critical patent/WO2017049531A1/fr
Priority to US15/933,633 priority patent/US10880909B2/en
Priority to AU2020201895A priority patent/AU2020201895B2/en
Priority to US17/100,558 priority patent/US11601958B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/10—Dynamic resource partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

Definitions

  • the present invention relates to the field of communications technologies, and more particularly to a data transmission method and apparatus.
  • a transmission time interval is a length of one subframe.
  • PDSCH physical downlink shared channel
  • PUSCH physical uplink shared channel
  • ACK acknowledgement
  • negative acknowledgement negative acknowledgement
  • the physical uplink control channel (PUCCH) of the NACK is designed according to the TTI length of one subframe.
  • latency is one of the important factors affecting the user experience.
  • the existing TTI transmission mechanism cannot meet the needs of low-latency services.
  • the present invention provides a data communication method and apparatus for meeting the needs of low latency services.
  • an embodiment of the present application provides a network device, including: a processing unit, configured to determine a transmission resource that transmits the data, where the time domain resource occupied by the transmission resource in the time domain is N time domain resources. In one of the N time domain resources, the time length of the time domain resource is less than 1 millisecond, where N is a positive integer, and the transceiver unit is configured to use the transmission resource determined by the processing unit. On, data transmission with the terminal device.
  • an embodiment of the present application provides a data transmission method, including:
  • the network device determines a transmission resource for transmitting the data, where the time domain resource occupied by the transmission resource in the time domain is one of N time domain resources, and any one of the N time domain resources Domain capital
  • the time length of the source is less than 1 millisecond, wherein N is a positive integer; the network device performs data transmission with the terminal device on the determined transmission resource.
  • an embodiment of the present application provides a terminal device, including: a processing unit, configured to determine a transmission resource that transmits the data, where the time domain resource occupied by the transmission resource in the time domain is N time domains.
  • a processing unit configured to determine a transmission resource that transmits the data, where the time domain resource occupied by the transmission resource in the time domain is N time domains.
  • One of the resources, the time length of any one of the N time domain resources is less than 1 millisecond, wherein N is a positive integer
  • the transceiver unit is configured to use the transmission determined by the processing unit Resources, data transmission with network devices.
  • an embodiment of the present application provides a data transmission method, including:
  • the terminal device determines a transmission resource for transmitting the data, where the time domain resource occupied by the transmission resource in the time domain is one of N time domain resources, and any one of the N time domain resources
  • the time length of the domain resource is less than 1 millisecond, where N is a positive integer; the terminal device performs data transmission with the network device on the determined transmission resource.
  • At least one time domain resource less than 1 ms is introduced, so that the transmission time interval is shortened, thereby effectively reducing the data transmission delay, thereby satisfying the low time. Deferred business needs.
  • the processing unit may be a processor
  • the transceiver unit may be a transceiver
  • the N time domain resources include a time length of 1 symbol, 2 symbols, 3 symbols, 4 symbols, or 1 slot. At least one time domain resource, the 1 time slot comprising 6 or 7 symbols.
  • the data transmitted by the transceiver unit when the transmission resource occupies at least 2 symbols in the time domain, the data transmitted by the transceiver unit includes a physical channel and a physical signal, and the physical signal and the The physical channels are respectively located in different ones of the at least two symbols. That is to say, when uplink transmission is performed between the network device and the terminal device, since the physical channel and the physical signal are time-divisional, that is, occupy different symbols, the single-carrier characteristic of the uplink can be maintained, thereby not affecting the efficiency of the power amplifier, and is particularly suitable. In the scenario where the uplink power is limited.
  • the 4 symbols include: Symbols used to transmit physical signals and Symbol for transmitting a physical channel, Less than 4.
  • the two symbols for transmitting physical signals when When equal to 2, are located in the middle 2 symbols or the first 2 symbols within the 4 symbols; or when When it is equal to 1, the one symbol for transmitting the physical signal is located in the first symbol or the second symbol in the four symbols. Since the symbol of the transmitted physical signal is located in front of the 4 symbols, channel estimation is performed faster based on the physical signal.
  • the 3 symbols include: Symbols for transmitting physical signals and 3-described Symbol for transmitting a physical channel, Less than 3.
  • the one symbol for transmitting the physical signal is located in the first symbol or the second symbol in the three symbols.
  • the 2 symbols when the transmission resource determined by the processing unit occupies 2 symbols in the time domain, the 2 symbols include 1 symbol for transmitting a physical signal.
  • the one symbol for transmitting the physical signal is located in the first symbol or the second symbol in the two symbols.
  • the 1 symbol is used to transmit a physical channel.
  • the transmission resource determined by the processing unit occupies 1 slot in the time domain: when 1 slot contains 7 symbols, the 1 slot includes Symbols used to transmit physical signals and Symbol for transmitting a physical channel, Less than 7; or when 1 slot contains 6 symbols, the 1 slot includes Symbols for transmitting physical signals and Symbol for transmitting a physical channel, Less than 6.
  • the data may include a physical signal and a physical channel, and the physical channel and the physical signal are located at different resource granularities RE in the transmission resource.
  • the physical signal overhead can be reduced, but since the physical channel and the physical signal are frequency-divided, and thus do not have the single-carrier characteristic, it is suitable for the scenario of downlink transmission and power-unlimited uplink transmission.
  • the physical channel can be used for transmitting the physical channel. More resources, suitable for low-speed scenes.
  • the determined transmission resource includes at least one short resource block, and any one of the at least one short resource block includes REs occupying continuous frequency in the frequency domain Subcarriers occupying consecutive N sym symbols in the time domain, the N sym being equal to the number of symbols occupied by the transmission resource in the time domain, the N sym sum Is a positive integer; includes any one of the short resource blocks RE for transmitting the physical signal, The REs for transmitting the physical signals are discontinuously distributed or comb-shaped in the frequency domain, Is a positive integer.
  • the time domain resource occupied by the determined transmission resource in the time domain is one time unit of M time units included in one subframe, Any one of the M time units is one of the N time domain resources.
  • the four time units are sequentially the first time unit, the second time unit, and the first a three time unit and a fourth time unit, wherein the four time units included in the one subframe include:
  • the four time units included in the one subframe include: for uplink transmission, when the last symbol in the one subframe is used for transmitting the sounding RS
  • the four time units included in the one subframe are arranged in the time domain according to the sorting four, sorting five or sorting seven configurations.
  • the four time units included in the one subframe include: when a slot contains 7 symbols, when the physical control format indicates the control of the channel PCFICH bearer
  • the format indicates that the number of PDCCH symbols indicated by the CFI or the high layer signaling is 0 or 1
  • the four time units included in the one subframe are arranged in the time domain by one or four, or when one slot contains seven symbols.
  • the number of PDCCH symbols indicated by the CFI or the high layer signaling is 2, 3, or 4
  • the 4 time units included in the one subframe are sorted in the time domain, ranked three, or ranked five. Configuration.
  • the transmission resource occupies one time unit of M time units in the time domain. Therefore, the location of the transmission resource is limited to one subframe, and thus is not distributed over the two subframes, thereby avoiding the complexity of increasing the scheduler of the apparatus.
  • FIG. 1 is a schematic flowchart of a data transmission method according to an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of a transmission resource occupying 4 symbols in a time domain according to an embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of a transmission resource occupying three symbols in a time domain according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a transmission resource occupying two symbols in a time domain according to an embodiment of the present disclosure
  • FIG. 5 is a schematic structural diagram of a transmission resource including 2 or 4 REs according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of an RE in a short resource block according to an embodiment of the present disclosure.
  • FIG. 7 is another schematic structural diagram of an RE in a short resource block according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of another structure of an RE in a short resource block according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of another structure of an RE in a short resource block according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of another structure of an RE in a short resource block according to an embodiment of the present disclosure.
  • FIG. 11 is another schematic structural diagram of an RE in a short resource block according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic diagram of another structure of an RE in a short resource block according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of another structure of an RE in a short resource block according to an embodiment of the present invention.
  • FIG. 14 is a schematic structural diagram of a location of a transmission resource in a subframe according to an embodiment of the present invention.
  • FIG. 15 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • FIG. 16 is a schematic structural diagram of another terminal device according to an embodiment of the present invention.
  • the LTE system is taken as an example in the foregoing background, the person skilled in the art should know that the present invention is not only applicable to the LTE system, but also applicable to other wireless communication systems, such as the Global System for Global System (Global System for Mobile System). Mobile Communication, GSM), Universal Mobile Telecommunications System (UMTS), Code Division Multiple Access (CDMA) system, and new network systems.
  • GSM Global System for Global System
  • UMTS Universal Mobile Telecommunications System
  • CDMA Code Division Multiple Access
  • the terminal device may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing device connected to a wireless modem.
  • the wireless terminal can communicate with one or more core networks via a Radio Access Network (RAN), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • RAN Radio Access Network
  • RAN can be a mobile terminal, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal.
  • RAN Radio Access Network
  • it may be a portable, pocket, handheld, computer built-in or in-vehicle mobile device that exchanges language and/or data with a wireless access network.
  • a wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station (Remote). Station), Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment (User Equipment).
  • PCS Personal Communication Service
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • a wireless terminal may also be called a system, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station (Remote). Station), Access Point, Remote Terminal, Access Terminal, User Terminal, User Agent, User Device, or User Equipment (User Equipment).
  • the network device involved in the embodiments of the present invention may be a base station, or an access point, or may refer to a device in the access network that communicates with the wireless terminal through one or more sectors on the air interface.
  • the base station can be used to convert the received air frame to the IP packet as a router between the wireless terminal and the rest of the access network, wherein the remainder of the access network can include an Internet Protocol (IP) network.
  • IP Internet Protocol
  • the base station can also coordinate attribute management of the air interface.
  • the base station may be a base station (BTS, Base Transceiver Station) in GSM or CDMA, or may be a base station (NodeB) in WCDMA, or may be an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE. This application is not limited.
  • each radio frame is composed of 10 subframes of 1 millisecond (ms) length, and each subframe may include 2 slots.
  • normal CP normal cyclic prefix
  • extended CP extended cyclic prefix
  • each subframe consists of 14 symbols
  • extended CP extended CP
  • the symbols are divided into uplink symbols and downlink symbols, the uplink symbols are called single carrier-frequency division multiple access (SC-FDMA) symbols, and the downlink symbols are called orthogonal frequency division multiplexing (orthogonal frequency division multiplexing). Multiplexing, OFDM) symbol.
  • SC-FDMA single carrier-frequency division multiple access
  • OFDM orthogonal frequency division multiplexing
  • OFDM orthogonal frequency division multiplexing
  • the physical channel involved in the embodiment of the present invention carries data information from a higher layer, and the physical channel may be a physical uplink share channel (PUSCH), A physical uplink control channel (PUCCH) or a physical downlink shared channel (PDSCH).
  • the physical signal involved in the embodiment of the present invention is used for the physical layer, and does not carry data information from a higher layer.
  • the physical signal may be a reference signal (Reference Signal, RS), for example, a demodulation reference signal for uplink (Demodulation Reference Signal, DMRS), Cell-specific Reference Signal (CRS) for downlink, UE-specific Reference Signal (URS) for downlink, or group-specific reference signal for downlink (Group) -specific Reference Signal, GRS).
  • RS Reference Signal
  • DMRS demodulation Reference Signal
  • CRS Cell-specific Reference Signal
  • URS UE-specific Reference Signal
  • GRS group-specific reference signal for downlink
  • GRS group-specific Reference Signal
  • the DMRS used for PUCCH demodulation is called PUCCH DMRS
  • the DMRS used for PUSCH demodulation is called PUSCH DMRS.
  • the CRS is an RS configured by the network device to all terminal devices in the cell
  • the GRS is an RS configured by the network device to a group of terminal devices
  • the URS is an RS configured for a specific terminal device.
  • the physical signals mentioned below are similar to the physical channels and are not illustrated one by one.
  • the techniques described herein may be applicable to LTE systems, or other wireless communication systems employing various wireless technologies. It is also applicable to the subsequent evolution systems using the LTE system, such as the fifth generation 5G system. For the sake of clarity, only the LTE system is taken as an example here.
  • data transmission is performed between the network device and the terminal device.
  • short TTI data transmission i.e., data transmission less than 1 ms
  • all embodiments of the present invention are applied to short TTI data data transmission between the network device and the terminal device.
  • the transmission time of each subframe is less than 1 ms, and the data transmission is at least less than 1 ms. Therefore, all embodiments of the present invention are applied to data data transmission between the network device and the terminal device for less than 1 ms.
  • An embodiment of the present invention is that a network device determines a transmission resource for transmitting data, and the time domain resource occupied by the transmission resource in the time domain is one of N time domain resources, and any one of the N time domain resources.
  • the time length of the time domain resource is less than 1 millisecond. Compared with the existing transmission that can only support one time length equal to 1 millisecond, at least one time domain resource less than 1 ms is introduced, so that the transmission time interval is shortened, and the data transmission can be effectively reduced. Delay, so that the needs of low-latency services can be met.
  • N time domain resources may be pre-defined by the network device and the terminal device; or specified by the protocol; or configured by the network device, and then notified to the terminal device by signaling. Configure N different time domain resources to meet the requirements of different system bandwidths, different system loads, different coverage requirements, different user locations, or different service types.
  • this embodiment provides a data transmission method, which may include the following steps.
  • Step 101 The network device determines a transmission resource used for transmitting the data, where the time domain resource occupied by the transmission resource in the time domain is one of N time domain resources, and any one of the N time domain resources The length of the domain resource is less than 1 millisecond, where N is a positive integer.
  • the N time domain resources involved in the embodiments of the present invention may include N time domain resources whose time lengths are less than 1 millisecond; or the N time domain resources may include At least one time domain resource having a time length less than 1 millisecond; or the N time domain resources may include at least two time domain resources having unequal lengths of time.
  • the existing transmission that can only support one time length equal to 1 millisecond at least one time domain resource less than 1 ms is introduced to shorten the transmission time interval.
  • N when N is greater than or equal to 2, it can be 1 ms. At least two schedules are performed internally, so the data transmission delay can be effectively reduced.
  • the network device can adaptively determine the time domain resources occupied by the transmission resources in the time domain according to system bandwidth, load, coverage requirement, user location or service type, etc., to adapt to system gain (the smaller the bandwidth, the short TTI data transmission gain) The less the system overhead (the smaller the bandwidth, the larger the proportion of overhead in short TTI data transmission), the coverage requirement (the more edge users, the more limited the short TTI data transmission coverage), or the QoS requirements (hour extension service).
  • a transmission resource configured by a network device for different terminal devices, different services, different loads, or different coverage scenarios has different time domain resources occupied in the time domain.
  • the network device may notify, by using high layer signaling or physical layer signaling, which one or more of the N time domain resources the time domain resource that the terminal device can be configured. It should be noted that the network device can change the time domain resources that can be configured as needed. Further, the network device determines to be used for transmission The time domain resource occupied by the transmission resource of the data in the time domain is one of the time domain resources that can be configured.
  • the terminal device also needs to determine a transmission resource for transmitting the data, and the time domain resource occupied by the transmission resource in the time domain is one of N time domain resources, and any one of the N time domain resources The length of the domain resource is less than 1 millisecond, where N is a positive integer.
  • the terminal device also needs to determine a transmission resource that transmits the data, and the time domain resource occupied by the transmission resource in the time domain is one of N time domain resources, and at least one of the N time domain resources The length of the resource is less than 1 millisecond, where N is a positive integer.
  • the terminal device may determine, according to the high layer signaling or physical layer signaling sent by the network device, that the transmission resource of the transmission data is one of the configurable time domain resources, where the high layer signaling or physical layer The signaling indicates which one or which of the N time domain resources the time domain resource that can be configured is.
  • the terminal device may also report information to the network device, where the information indicates which one or which of the N time domain resources the terminal device wishes to use. Then, the network device configures, according to the information, that the time domain resource occupied by the transmission resource in the time domain is one of N time domain resources.
  • the terminal device may need to receive or send services with different delay requirements at the same time. If the services required by different delays are transmitted on one serving cell, on the one hand, the scheduler of the network device is very complicated, and another On the other hand, it is also difficult to meet the delay requirements of the hourly business.
  • the embodiment of the present invention provides the following technical solutions:
  • the network device determines a first transmission resource for transmitting the first data, where the time domain resource occupied by the first transmission resource in the time domain is N time domain resources.
  • the time length of any one of the N time domain resources is less than 1 millisecond, where N is a positive integer, and the first transmission resource is located in a first serving cell; the network device determines And a second transmission resource for transmitting the second data, where the second transmission resource occupies 1 ms or 1 subframe in the time domain, and the second transmission resource is located in the second serving cell.
  • the first serving cell and the second serving cell are located on different carriers, that is, the first transmission resource is located on the first carrier, the second transmission resource is located on the second carrier, and the terminal device can simultaneously receive the first serving cell.
  • the first data on the first data and the second data on the second serving cell may simultaneously receive the first data on the first carrier and the second data on the second carrier. It should be noted that all the solutions provided by the embodiments of the present invention are applicable to the first data and the first transmission resource.
  • the terminal device when the terminal device supports carrier aggregation, the terminal device determines a first transmission resource for transmitting the first data, and the time domain resource occupied by the first transmission resource in the time domain is one of N time domain resources.
  • the time length of any one of the N time domain resources is less than 1 millisecond, where N is a positive integer, the first transmission resource is located in a first serving cell; the terminal device determines to be used for transmission
  • the second transmission resource of the second data the second transmission resource occupies 1 ms or 1 subframe in the time domain, and the second transmission resource is located in the second serving cell.
  • the scheduling of the network device is simpler and more flexible, that is, services with different delay requirements can be configured in different serving cells.
  • the network device can configure the hourly delay service in the first serving cell.
  • the hourly extension service is configured in the second serving cell.
  • Step 102 The network device performs data transmission with the terminal device on the determined transmission resource.
  • the network device when the data is uplink data, the network device receives the uplink data sent by the terminal device on the transmission resource; or when the data is downlink data, the network device sends the uplink data to the terminal device on the transmission resource.
  • the downlink data when the data is uplink data, the network device receives the uplink data sent by the terminal device on the transmission resource; or when the data is downlink data, the network device sends the uplink data to the terminal device on the transmission resource.
  • the downlink data when the data is uplink data, the network device receives the uplink data sent by the terminal device on the transmission resource; or when the data is downlink data, the network device sends the uplink data to the terminal device on the transmission resource.
  • the downlink data when the data is uplink data, the network device receives the uplink data sent by the terminal device on the transmission resource; or when the data is downlink data, the network device sends the uplink data to the terminal device on the transmission resource.
  • the downlink data when the data is uplink data, the network device
  • the terminal device after determining, by the terminal device, the transmission resource for transmitting the data, when the data is uplink data, the terminal device sends the uplink data on the transmission resource; or when the data is downlink data, the terminal device is The transmission resource receives downlink data sent by the network device.
  • the network device determines a transmission resource that transmits the data, and the time domain resource occupied by the transmission resource in the time domain is one of N time domain resources, and any one of the N time domain resources
  • the time length of the resource is less than 1 millisecond.
  • at least one time domain resource less than 1 ms is introduced to shorten the transmission time interval, which can effectively reduce the data transmission delay. To meet the needs of low latency business.
  • the network device determines a transmission resource for transmitting the data by using the following manner, and the terminal device is also determined by:
  • the transmission resource used to transmit the data as follows:
  • the N types of time domain resources mentioned above may include at least one time domain resource of a time length of 1 symbol, 2 symbols, 3 symbols, 4 symbols, or 1 slot.
  • the gap can include 6 or 7 symbols.
  • the two time domain resources may include a time domain resource with a length of 3 symbols and a time domain resource with a length of 4 symbols.
  • the one type of time domain resource is a time domain resource whose time length may be 1 symbol, 2 symbols, 3 symbols, 4 symbols, or 1 slot.
  • the foregoing N kinds of time domain resources may include a time length of 1 symbol, 2 symbols, 3 symbols, 4 symbols, or 1 slot or at least one of 1 subframes.
  • the N time domain resources mentioned above may include at least one time domain resource of a length of time d ms or 1 ms, where d is less than 1 and greater than 0.
  • the transmission resource when the transmission resource can occupy at least 2 symbols in the time domain, the data can include a physical channel and a physical signal, the physical signal and the physical channel being respectively located in different symbols of the at least two symbols. That is to say, when uplink transmission is performed between the network device and the terminal device, since the physical channel and the physical signal are time-divisional, that is, occupy different symbols, the uplink single carrier characteristic can be maintained, which is particularly suitable for uplink power limitation. Scenes.
  • the data may include a PUCCH and a PUCCH DMRS, where the PUCCH and the PUCCH DMRS are located in different symbols; or, for PUSCH transmission, The data may include a PUSCH and a PUSCH DMRS, the PUSCH and the PUSCH DMRS being located in different symbols.
  • the above is merely an example of an embodiment of the present invention, and the present invention is not limited thereto.
  • the 4 symbols may include: Symbols for transmitting physical signals and 4- a symbol for transmitting a physical channel, Less than 4.
  • the two symbols for transmitting the physical signal when When equal to 2, may be located in the middle 2 symbols or the first 2 symbols within the 4 symbols; or as shown in (c) or (d) of FIG. 2, when When it is equal to 1, the one symbol for transmitting the physical signal may be located in the first symbol or the second symbol within the four symbols.
  • the symbol for transmitting the physical signal is located in the front position among the respective symbols exemplified below, channel estimation can be performed more quickly from the reference signal.
  • the four symbols are four symbols occupied by the transmission resource in the time domain.
  • the 4 symbols may include 2 symbols for transmitting PUCCH DMRS and 2 symbols for transmitting PUCCH.
  • SRB short resource block
  • the data transmission is PUCCH transmission
  • the data carried by the PUCCH is channel state information (CSI)
  • CSI channel state information
  • the 4 symbols may include 1 symbol for transmitting PUCCH DMRS and 3 symbols for transmitting PUCCH. In this way, more bits of CSI may be carried on the PUCCH.
  • the 4 symbols may include 1 symbol for transmitting the PUSCH DMRS and 3 symbols for transmitting the PUSCH. In this manner, more bits of data can be carried on the PUSCH.
  • the 3 symbols include: Symbols for transmitting physical signals and 3- a symbol for transmitting a physical channel, Less than 3.
  • the two symbols for transmitting physical signals may be located in the first two symbols within the three symbols; or as shown in (b) or (c) of FIG. 3, when When it is equal to 1, the one symbol for transmitting the physical signal is located in the second symbol or the first symbol in the three symbols.
  • the three symbols are three symbols occupied by the transmission resource in the time domain.
  • the Equal to 1 that is, the 3 symbols may include 1 symbol for transmitting PUCCH DMRS and 2 symbols for transmitting PUCCH.
  • the 3 symbols may include 1 symbol for transmitting the PUSCH DMRS and 2 symbols for transmitting the PUSCH. In this manner, more bits of data may be carried on the PUSCH.
  • the 2 symbols may include: 1 A symbol for transmitting a physical signal and a symbol for transmitting a physical channel, and the symbol for transmitting the physical signal may be located at the first symbol or the second symbol within the two symbols.
  • the 1 symbol when it is determined that the transmission resource for transmitting the data occupies 1 symbol in the time domain, the 1 symbol may not include a symbol for transmitting a physical signal, that is, the 1 symbol can only be used.
  • the 1 symbol For physical channel transmission, preferably, if the physical channel is PUCCH, the 1 symbol is only applicable to PUCCH transmission.
  • the HARQ information carried by the PUCCH is NACK
  • the resource number of the PUCCH is the first resource number
  • the HARQ information carried by the PUCCH is ACK
  • the resource number of the PUCCH is the first Two resource numbers.
  • the first resource number and the second resource number are different, that is, the PUCCH carrying the NACK and the PUCCH carrying the ACK are different in code sequence and/or the frequency domain resources are different.
  • the network device transmits the PUCCH on the 1 symbol; when the HARQ information indicates the NACK, the network device does not send the PUCCH.
  • the 1 slot when it is determined that the transmission resource for transmitting the data occupies 1 slot in the time domain, and 1 slot can include 7 symbols, the 1 slot includes Symbols used to transmit physical signals and a symbol for transmitting a physical channel, Less than 7; or when it is determined that the transmission resource for transmitting the data occupies 1 slot in the time domain, and 1 slot can include 6 symbols, the 1 slot includes Symbols used to transmit physical signals and a symbol for transmitting a physical channel, Less than 6.
  • the physical signal is a PUSCH DMRS and the physical channel is a PUSCH
  • the 1 slot can include one symbol for transmitting a PUSCH DMRS and six uses. a symbol for transmitting a PUSCH, where Equal to 1; or the 1 slot may include 2 symbols for transmitting PUSCH DMRS and 5 symbols for transmitting PUSCH, where Equal to 2.
  • the network device can flexibly configure the number of symbols of the physical signal according to requirements, for example, the network device can send signaling to the terminal device, and the signaling can be used to indicate Equal to 1, or the signaling can be used to indicate Equal to 2; for example, when doing frequency offset estimation or in high-speed application scenarios, network devices can be configured Equal to 2, otherwise the network device can be configured Equal to 1; wherein the signaling may be high layer signaling or physical layer signaling.
  • the physical signal is a PUSCH DMRS and the physical channel is a PUSCH.
  • the one slot may include one symbol for transmitting a PUSCH DMRS and five uses. a symbol for transmitting a PUSCH, where Equal to 1; or the 1 slot may include 2 symbols for transmitting PUSCH DMRS and 4 symbols for transmitting PUSCH, where Equal to 2.
  • the network device can send signaling to the terminal device, which can be used to indicate Equal to 1, or the signaling can be used to indicate Equal to 2, where the signaling is high layer signaling or physical layer signaling.
  • the physical signal is a PUCCH DMRS and the physical channel is a PUCCH.
  • the 1 slot can include 2 symbols for transmitting PUCCH DMRS and 5 uses. For transmitting the symbol of the PUCCH, Equal to 2; or the 1 slot may include 3 symbols for transmitting PUCCH DMRS and 4 symbols for transmitting PUCCH, Equal to 3.
  • the physical signal is a PUCCH DMRS and the physical channel is a PUCCH
  • the 1 slot may include 2 symbols for transmitting PUCCH DMRS and 4 for transmission.
  • PUCCH symbol, the Equal to 2; or the 1 slot may include 3 symbols for transmitting PUCCH DMRS and 3 symbols for transmitting PUCCH, Equal to 3.
  • the N types of time domain resources mentioned above may include at least one time domain resource of a time length of 1 symbol, 2 symbols, 3 symbols, 4 symbols, or 1 slot.
  • the slot may include 6 or 7 symbols.
  • the data when the transmission resource can occupy at least 2 symbols in the time domain, the data may include a physical channel and a physical signal, where the physical signal and the physical channel are respectively located at the The case of different symbols in two symbols is explained. For a better understanding of the solution of the present invention, another case is described below, that the data may include a physical signal and a physical channel, the physical channel and the physical signal. A different RE located in the transmission resource.
  • the physical signal is discontinuously distributed or comb-shaped in the frequency domain.
  • the transmission resource includes at least 2 REs.
  • the transmission resource may include RE, that is, the transmission resource occupies in the frequency domain Subcarriers occupy consecutive N sym symbols in the time domain, where N RB is a positive integer. Is a positive integer, preferably,
  • the overhead of the physical signal can be reduced, but since the physical channel and the physical signal are frequency-divided and thus do not have the single-carrier characteristic, it is suitable for the scenario of downlink transmission and power-unlimited uplink transmission.
  • the physical channel can be used for transmitting the physical channel. More resources, suitable for low-speed scenes.
  • the data may include a PDSCH and a downlink (DL) reference signal, the PDSCH and the DL reference
  • the signals are located in different REs.
  • the DL reference signal may be a CRS, a GRS, or a URS.
  • the physical signal may be an example of the RS. However, this is only an example of the embodiment of the present invention, and the present invention is not limited thereto.
  • the data may include PUCCH and PUCCH DMRS, where the PUCCH and PUCCH DMRS are located in different REs; for PUSCH transmission
  • the data may include a PUSCH and a PUSCH DMRS, the PUSCH and the PUSCH DMRS being located in different REs.
  • the transmission resource may include at least one short resource block, and any one of the at least one short resource block includes REs occupying continuous frequency in the frequency domain Subcarriers occupy consecutive N sym symbols in the time domain, the N sym being equal to the number of symbols occupied by the transmission resource in the time domain, the N sym sum Is a positive integer; includes any one of the short resource blocks RE for transmitting the physical signal, the REs are discontinuous or comb-shaped in the frequency domain, Is a positive integer.
  • the number of transmit antennas is the number of transmit antennas supported by the terminal device.
  • the number of transmit antennas is the number of transmit antennas supported by the network device. The following describes the number of different antennas:
  • the short resource block may include 2 or 4 for transmitting physical signals (such as RS).
  • RE as shown in (a) or (b) of Figure 5, when Equal to 2, the two REs for transmitting the RS are located in the first symbol or the third symbol in the short resource block, and the two REs are separated by 5 REs.
  • the 4 REs for transmitting the RS include 2 REs on the 1st symbol in the short resource block and 2 REs on the 3rd symbol, and between 2 REs on each symbol 5 REs apart.
  • the short resource block may include 2 or 4 for transmitting the first transmit antenna.
  • two REs for transmitting the RS of the first transmitting antenna and two REs for transmitting the RS of the second transmitting antenna are located in the short resource block. 1 symbol or 3rd symbol.
  • the RE of the RS for transmitting the first transmitting antenna and the RE of the RS for transmitting the second transmitting antenna are located in the first symbol and in the short resource block. The third symbol.
  • the short resource block may include 2 or 4 for transmitting the first transmitting antenna.
  • RE of the physical signal 2 or 4 REs for transmitting the physical signal of the second transmitting antenna, 2 or 4 REs for transmitting the physical signal of the third transmitting antenna, 2 or 4 for transmitting the fourth The RE of the physical signal of the root transmit antenna.
  • two REs for transmitting the RS of the first transmitting antenna and two REs for transmitting the RS of the second transmitting antenna are located in the first symbol or the third symbol in the short resource block
  • the RE of the two RSs for transmitting the third transmitting antenna and the REs of the two RSs for transmitting the fourth transmitting antenna are located in the second symbol or the fourth symbol in the short resource block.
  • four REs for transmitting the RS of the first transmit antenna and four REs for transmitting the RS of the second transmit antenna are located in short-term
  • the first symbol and the third symbol in the source block, the RE of the RS for transmitting the third transmitting antenna, and the RE of the RS for transmitting the fourth transmitting antenna are located in the short resource block 2 symbols and 4th symbol.
  • the RE of the RS for transmitting the first transmit antenna and the RE of the RS for transmitting the second transmit antenna are located in the first symbol and the third symbol in the short resource block, 2
  • the RE of the RS for transmitting the third transmitting antenna and the RE of the two RSs for transmitting the fourth transmitting antenna are located in the second symbol or the fourth symbol in the short resource block.
  • the physical signal may be a CRS and a URS/GRS
  • the first symbol in the short resource block may include greater than or equal to 2 for transmitting the CRS.
  • the RE, the third symbol in the short resource block may include greater than or equal to 2 REs for transmitting the URS/GRS, where the CRS is a CRS transmitted by the network device on a single transmit antenna, the URS /GRS is the URS/GRS that the network device transmits on a single transmit antenna.
  • the single transmit antenna corresponding to the CRS and the single transmit antenna corresponding to the URS/GRS may have the same or different antenna port numbers, but all correspond to the same transmit antenna.
  • the terminal device can perform the same root based on the CRS and the URS/GRS. Channel estimation of the transmit antenna.
  • the antenna port number is a virtual number, and even if the antenna port number is different, it can represent the same transmitting antenna.
  • the physical signal may be a CRS and a URS/GRS
  • the first symbol in the short resource block may include greater than or equal to 4 for transmitting the CRS.
  • the RE, the third symbol in the short resource block may include greater than or equal to 4 REs for transmitting the URS/GRS.
  • the CRS includes a CRS transmitted by the network device on two transmit antennas, where the URS/GRS includes a URS/GRS transmitted by the network device on two transmit antennas.
  • the antenna ports of the two transmit antennas corresponding to the CRS and the two transmit antennas corresponding to the URS/GRS may be the same or different, but all correspond to the same two transmit antennas. Therefore, the terminal device may be based on CRS and URS/GRS. Channel estimation corresponding to the same two transmit antennas is performed.
  • the physical signal may be CRS and URS/GRS
  • the first symbol and the second symbol in the short resource block may include greater than or equal to 8
  • the third symbol and the fourth symbol in the short resource block may be included
  • the CRS includes a CRS transmitted by the network device on four transmit antennas
  • the URS/GRS includes a URS/GRS transmitted by the network device on four transmit antennas.
  • the four transmit antennas corresponding to the CRS and the four transmit antennas corresponding to the URS/GRS may have the same or different antenna port numbers, but all correspond to the same four transmit antennas. Therefore, the terminal device can perform based on CRS and URS/GRS. Corresponding to the channel estimates of the same four transmit antennas.
  • the physical signal may be a CRS and a URS/GRS
  • the first symbol and the second symbol in the short resource block may include greater than or equal to 8.
  • the RE for transmitting the CRS, the third symbol or the fourth symbol in the short resource block may include greater than or equal to 4 REs for transmitting the URS/GRS.
  • the CRS includes a CRS transmitted by the network device on four transmit antennas, where the URS/GRS includes a URS/GRS transmitted by the network device on two transmit antennas.
  • the two transmit antennas of the four transmit antennas corresponding to the CRS and the two transmit antennas corresponding to the URS/GRS may have the same or different antenna port numbers, but all correspond to the same two transmit antennas. Therefore, the terminal device may be based on The CRS and URS/GRS perform channel estimation corresponding to the same two transmit antennas.
  • the short resource block may include 2 or 4 REs for transmitting the RS, as shown in the figure. (a) or (b) in 7 Equal to 2, the two REs for transmitting the RS are located in the first symbol or the third symbol in the short resource block, and the two REs are separated by 5 REs; as shown in (c) of FIG. 7, when Equal to 4, the 4 REs for transmitting the RS include 2 REs on the 1st symbol in the short resource block and 2 REs on the 3rd symbol, and between 2 REs on each symbol 5 REs apart.
  • the short resource block may include 2 or 4 RSs for transmitting the first transmit antenna.
  • RE and includes 2 or 4 REs for transmitting the RS of the second transmit antenna.
  • two REs for transmitting the RS of the first transmitting antenna and two for transmission The RE of the RS of the second transmit antenna is located in the first symbol or the third symbol in the short resource block.
  • the REs of the four RSs for transmitting the first transmitting antenna and the REs of the four RSs for transmitting the second transmitting antenna are located in the first symbol and in the short resource block. The third symbol.
  • the short resource block may include 2 or 4 for transmitting the first transmitting antenna.
  • RE of the RS 2 or 4 REs of the RS for transmitting the second transmitting antenna, 2 REs for transmitting the RS of the third transmitting antenna, and 2 REs for transmitting the RS of the fourth transmitting antenna .
  • two REs for transmitting the RS of the first transmitting antenna and two REs for transmitting the RS of the second transmitting antenna are located in the first symbol or the third symbol in the short resource block
  • Two REs for transmitting the RS of the third transmitting antenna and two REs for transmitting the RS of the fourth transmitting antenna are located in the second symbol in the short resource block; for example, four are used for transmitting the first
  • the RE of the RS of the root transmit antenna and the RE of the RS for transmitting the second transmit antenna are located in the first symbol and the third symbol in the short resource block
  • the two RSs for transmitting the third transmit antenna The RE of the RE and the two RSs for transmitting the fourth transmit antenna are located in the second symbol within the short resource block.
  • the physical signal may be a CRS and a URS/GRS
  • the first symbol in the short resource block may include greater than or equal to 2 for transmitting the CRS.
  • the RE, the third symbol in the short resource block may include greater than or equal to 2 REs for transmitting the URS/GRS, where the CRS is a CRS transmitted by the network device on a single transmit antenna, the URS /GRS is the URS/GRS that the network device transmits on a single transmit antenna.
  • the terminal device may perform channel estimation corresponding to the same transmit antenna based on the CRS and the URS/GRS.
  • the physical signal may be CRS and URS/GRS
  • the first symbol in the short resource block may include greater than or equal to 4 for transmission.
  • the RE of the CRS, the third symbol in the short resource block may include greater than or equal to 4 REs for transmitting the URS/GRS.
  • the CRS includes a CRS transmitted by the network device on two transmit antennas, where the URS/GRS includes a URS/GRS transmitted by the network device on two transmit antennas.
  • the terminal device may perform channel estimation corresponding to the same two transmit antennas based on the CRS and the URS/GRS.
  • the physical signal may be a CRS and a URS/GRS
  • the first symbol and the second symbol in the short resource block may include greater than or equal to 8.
  • the RE for transmitting the CRS the third symbol in the short resource block may include greater than or equal to 4 REs for transmitting the URS/GRS.
  • the CRS includes a CRS transmitted by the network device on four transmit antennas, where the URS/GRS includes a URS/GRS transmitted by the network device on two transmit antennas.
  • the two transmit antennas of the four transmit antennas corresponding to the CRS and the two transmit antennas corresponding to the URS/GRS may have the same or different antenna port numbers, but all correspond to the same two transmit antennas. Therefore, the terminal device may be based on the CRS.
  • the channel estimates of the two transmit antennas corresponding to the URS/GRS are performed.
  • the short resource block may include 2 or 4 REs for transmitting physical signals, as shown in FIG. 9.
  • the two REs for transmitting the RS are located in the first symbol or the second symbol in the short resource block, and the two REs are separated by 5 REs; as shown in (c) of FIG. 9, when When equal to 4, the 4 REs for transmitting the RS include 2 REs on the 1st symbol in the short resource block and 2 REs on the 2nd symbol, and 2 REs on each symbol 5 REs apart.
  • the short resource block may include 2 or 4 REs for transmitting the physical signals of the first transmit antenna, and 2 or 4 REs for transmitting the physical signals of the second transmit antenna.
  • the short resource block may include 2 or 3 for transmitting the first transmitting antenna.
  • RE of physical signal 2 or 3 REs for transmitting physical signals of the second transmitting antenna, 2 or 3 REs for transmitting physical signals of the third transmitting antenna, 2 or 3 for transmission
  • the fourth RE of the physical signal of the transmitting antenna may include 2 or 3 for transmitting the first transmitting antenna.
  • the short resource block may include 2, 3 or 4 REs for transmitting physical signals.
  • the short resource block may include 2, 3 or 4 RE for transmitting the physical signal of the first transmit antenna, and 2, 3 or 4 REs for transmitting the physical signal of the second transmit antenna.
  • four transmitting antennas may not be configured.
  • the short resource block may include 4, 6 or 8 REs for transmitting RS.
  • the 4 REs for transmitting the RS are located in the 1st symbol and the 5th symbol in the short resource block; or, when Equal to 6, the 6 REs used to transmit the RS are located in the 1st symbol, the 3rd symbol and the 5th symbol in the short resource block; or, when Equal to 8, the 8 REs used to transmit the RS are located in the 1st symbol, the 3rd symbol, the 5th symbol, and the 7th symbol in the short resource block.
  • the short resource block may include 4, 6 or 8 REs for transmitting the RS of the first transmit antenna. And 4, 6 or 8 REs for transmitting the RS of the second transmitting antenna.
  • 4 REs for transmitting the RS of the first transmitting antenna and 4 REs for transmitting the RS of the second transmitting antenna are located in the short resource block.
  • the first symbol and the fifth symbol; or, the RE of the RS for transmitting the RS of the first transmitting antenna and the RE of the RS for transmitting the second transmitting antenna are located in the first of the short resource blocks a symbol, a third symbol and a fifth symbol; or, an RE of 8 RSs for transmitting the first transmitting antenna and 8 REs for transmitting the RS of the second transmitting antenna are located in the short resource block 1 symbol, 3rd symbol, 5th symbol and 7th symbol.
  • the short resource block may include four RSs for transmitting the first transmit antenna.
  • RE, 4 REs for transmitting the RS of the second transmitting antenna, 2 or 4 REs for transmitting the RS of the third transmitting antenna, 2 or 4 REs for transmitting the RS of the fourth transmitting antenna when 1 slot includes 7 symbols, the RE of 4 RSs for transmitting the first transmitting antenna and the REs of 4 RSs for transmitting the second transmitting antenna are located in the first of the short resource blocks.
  • two REs for transmitting the RS of the third transmitting antenna and two REs for transmitting the RS of the fourth transmitting antenna are located in the second symbol in the short resource block; or, 4
  • the REs of the RSs for transmitting the first transmitting antenna and the REs of the RSs for transmitting the second transmitting antenna are located in the first symbol and the fifth symbol in the short resource block, and four are used for transmission.
  • the RE of the RS of the three transmitting antennas and the RE of the RSs for transmitting the fourth transmitting antenna are located in the second symbol and the sixth symbol in the short resource block.
  • the physical signal may be CRS and URS/GRS
  • the first symbol in the short resource block may include greater than or equal to 12 REs for transmitting the CRS
  • the sixth symbol in the short resource block may include greater than or equal to 4 for transmitting the
  • the CRS includes a CRS transmitted by the network device on four transmit antennas, where the URS/GRS includes a URS/GRS transmitted by the network device on two transmit antennas.
  • the two transmit antennas of the four transmit antennas corresponding to the CRS and the two transmit antennas corresponding to the URS/GRS may have the same or different antenna port numbers, but all correspond to the same two transmit antennas. Therefore, the terminal device may be based on the CRS.
  • the channel estimates of the two transmit antennas corresponding to the URS/GRS are performed.
  • the physical signal can be CRS and URS/GRS
  • the first symbol in the short resource block The 2 symbols and the 4th symbol may include greater than or equal to 12 REs for transmitting the CRS, and the 5th symbol in the short resource block may include greater than or equal to 4 for transmitting the URS/GRS.
  • the CRS includes a CRS transmitted by a network device on four transmit antennas
  • the URS/GRS Includes URS/GRS transmitted by network devices on two transmit antennas.
  • the terminal device can perform channel estimation corresponding to the same two transmit antennas based on the CRS and the URS/GRS.
  • the network device may send signaling to the terminal device, the signaling including indicating whether to configure the URS/GRS.
  • the signaling is physical layer signaling or higher layer signaling.
  • the physical signal includes a URS/GRS, as shown in the embodiment related to the URS/GRS.
  • the time domain resource occupied by the transmission resource occupied by the data transmission in the time domain is one of the N time domain resources, and thus the transmission resource is less than one subframe or 1 ms. Further, it is necessary to define the location of the transmission resource in one subframe, as follows:
  • the time domain resource occupied by the determined transmission resource in the time domain may be one time unit of M time units (TUs) included in one subframe, and any one of the M time units The time unit is one of the N time domain resources.
  • M time units TUs
  • a subframe may be divided into M time units, and the length of each time unit is less than or equal to the length of the subframe, that is, the number of symbols included in each time unit is less than or equal to the number of symbols included in the subframe.
  • the number of symbols included in the plurality of time units may be different.
  • the location of the transmission resource is limited to one subframe, and thus is not distributed over two subframes, thereby avoiding the complexity of increasing the network device scheduler.
  • the two time units included in the subframe include a first time unit and a second time unit, where the first time unit is located in the first slot of the subframe, and the second time unit is located.
  • the four time units included in the subframe may include a first time unit, a second time unit, a third time unit, and a fourth time unit, and the four time units are included in the subframe.
  • the time unit can be sorted according to any of the following sorting examples, but this is only an example of the present invention, the present invention The inclusion includes not limited to this. It should be noted that the length of time of one subframe is equal to or greater than the sum of time lengths of four time units.
  • the length of time of the first time unit is 4 symbols
  • the length of time of the second time unit is 3 symbols
  • the length of time of the third time unit is 4 symbols
  • the length of time of the fourth time unit It is 3 symbols; for example, taking 1 subframe as an example, 1 frame is composed of 14 symbols, namely ⁇ #0, #1, #2, #3, #4, #5, #6, #7,# 8, #9, #10, #11, #12, #13 ⁇
  • the order of the time units included in the 1 subframe may be: the first time unit is located in the first symbol set ⁇ # 0, #1, #2, #3 ⁇ , the second time unit is located in the second symbol set ⁇ #4, #5, #6 ⁇ , and the third time unit is located in the third symbol set ⁇ #7, #8,# 9, #10 ⁇
  • the fourth time element is located in the fourth symbol set ⁇ #11, #12, #13 ⁇ ; or,
  • the order of the time units included in the 1 subframe may be: the first time unit is located in the first symbol set ⁇ # 0, #1, #2 ⁇ , the second time unit is located in the second symbol set ⁇ #3, #4, #5, #6 ⁇ , and the third time unit is located in the third symbol set ⁇ #7, #8, #9 ⁇ , the fourth time unit is located in the fourth symbol set ⁇ #10, #11, #12, #13 ⁇ ; or,
  • the order of time units included in the 1 subframe may be: the first time unit is located in the first symbol set ⁇ # 0, #1, #2 ⁇ , the second transmission unit is located in the second symbol set ⁇ #3, #4, #5, #6 ⁇ , and the third transmission unit is located in the third symbol set ⁇ #7, #8, #9,#10 ⁇ , the fourth transmission unit is located in the fourth symbol set ⁇ #11, #12, #13 ⁇ ; or,
  • the length of time of the first time unit is 4 symbols
  • the length of time of the second time unit is 3 symbols
  • the length of time of the third time unit is 3 symbols
  • the length of time of the fourth time unit For 3 symbols, for example, 1 subframe, 1 frame consists of 14 symbols, namely ⁇ #0, #1, #2, #3, #4, #5, #6, #7, #8 , #9, #10, #11, #12, #13 ⁇
  • the order of time units included in the 1 subframe may be: the first time unit is located in the first symbol set ⁇ #0 , #1, #2, #3 ⁇ , the second time unit is located in the second symbol set ⁇ #4, #5, #6 ⁇ , and the third time unit is located in the third symbol set ⁇ #7, #8, #9 ⁇
  • the fourth time unit is located in the fourth symbol set ⁇ #10, #11, #12 ⁇ ; or,
  • the order of time units included in the 1 subframe may be: the first time unit is located in the first symbol set ⁇ #0 , #1, #2 ⁇ , the second time unit is located in the second symbol set ⁇ #3, #4, #5, #6 ⁇ , and the third time unit is located in the third symbol set ⁇ #7, #8, #9 ⁇
  • the fourth time unit is located in the fourth symbol set ⁇ #10, #11, #12 ⁇ ; or,
  • the length of time of the first time unit is 3 symbols
  • the length of time of the second time unit is 3 symbols
  • the length of time of the third time unit is 3 symbols
  • the length of time of the fourth time unit For 3 symbols, for example, 1 subframe, 1 frame consists of 14 symbols, namely ⁇ #0, #1, #2, #3, #4, #5, #6, #7, #8 , #9, #10, #11, #12, #13 ⁇
  • the order of time units included in the 1 subframe may be: the first time unit is located in the first symbol set ⁇ #0 , #1, #2 ⁇ , the second time unit is located in the second symbol set ⁇ #3, #4, #5 ⁇ , and the third time unit is located in the third symbol set ⁇ #6, #7, #8 ⁇ , fourth The time unit is located in the fourth symbol set ⁇ #9, #10, #11 ⁇ ; or,
  • the length of time of the first time unit is 3 symbols
  • the length of time of the second time unit is 3 symbols
  • the length of time of the third time unit is 3 symbols
  • the fourth time list The time length of the element is 2 symbols, for example, 1 subframe is taken as an example, and 1 frame is composed of 14 symbols, namely ⁇ #0, #1, #2, #3, #4, #5, #6,# 7, #8, #9, #10, #11, #12, #13 ⁇
  • the order of the time units included in the 1 subframe may be: the first time unit is located in the first symbol Set ⁇ #0, #1, #2 ⁇ , the second time unit is located in the second symbol set ⁇ #3, #4, #5 ⁇ , and the third time unit is located in the third symbol set ⁇ #6, #7, #8 ⁇ , the fourth time unit is located in the fourth symbol set ⁇ #9, #10 ⁇ .
  • one subframe may be configured according to the sorting 4, the sorting 5, or the sorting 7 in the time domain.
  • Four time units may be included; for a subframe that is not used for transmitting RS SRS, one subframe may be configured in one of seven sorts in the time domain, and may include four time units.
  • the foregoing “the last symbol in the subframe is used to transmit the SRS” refers to at least one of the following four cases: Case 1, the last symbol transmission of the terminal device in the subframe.
  • the subframe is a subframe configured with a cell-specific SRS, and the bandwidth occupied by the specific SRS of the cell and the bandwidth portion occupied by the data in the frequency domain Or all overlaps; or, in the third case, the subframe is a terminal device-specific aperiodic SRS subframe, and the terminal device may transmit the SRS on the last symbol of the subframe on the serving cell where the data is located; or Case 4: When the terminal device is configured with multiple timing advance groups (TAGs), the subframe is a terminal device-specific periodic SRS subframe, and the terminal device is located on the serving cell where the data is located. The SRS can be transmitted on the last symbol of the subframe.
  • TAGs timing advance groups
  • the PUCCH carries the HARQ feedback information, where the HARQ feedback information indicates the reception status of the PDSCH.
  • the PDCCH when considering that the first 1, 2, 3 or 4 symbols in the downlink subframe can be used.
  • the PDCCH is transmitted and there are multiple symbols for transmitting the PDCCH, the The number of resources that can be used for PDSCH transmission in the first time unit in the downlink subframe is small, and therefore, the number of users that can be scheduled in the first time unit is small, so that the first one in the downlink subframe
  • the first time unit in the uplink subframe corresponding to the time unit needs to transmit a PUCCH with a small number of users. Therefore, the length of the first time unit may be three symbols, for example, may be sorted in the time domain. Three or five configurations
  • One subframe includes four time units, that is, the first time unit of the second, third, or fifth order has a length of three symbols.
  • the physical control format indicates that the control format of the channel PCFICH bearer indicates CFI or higher layer signaling.
  • the number of indicated PDCCH symbols is 0 or 1
  • one subframe may be configured in the time domain according to the order one or the fourth order includes 4 time units; or the subframe includes 4 time units, and 1 slot contains 6 symbols.
  • the number of PDCCH symbols indicated by the CFI or the high layer signaling is 2, 3, or 4
  • one subframe may be configured in the time domain according to the order 2, the sort 3 or the sort 5 to include 4 time units.
  • the time domain resource occupied by the transmission resource determined by the network device in the time domain is one of the M time units included in one subframe.
  • the network device determines the one time unit according to the following method:
  • the one time unit is a time unit occupied by first downlink control information (DCI), and the first DCI may include information for indicating downlink data transmission.
  • the network device transmits the first DCI to the terminal device. or,
  • the one time unit is the Kth time unit after the time unit occupied by the second DCI, where K is an integer greater than or equal to 4, and the second DCI may include an implicit indication.
  • Information for uplink data transmission is the network device transmits a second DCI to the terminal device before, after or at the same time as determining the one time unit.
  • the PUCCH when the data transmission is a PUCCH transmission, the PUCCH carries HARQ feedback information, and the HARQ feedback information indicates a reception status of the PDSCH,
  • the one time unit is the Kth time unit after the time unit occupied by the second DCI, where K is an integer greater than or equal to 4, the second DCI includes information indicating PDSCH transmission; and, for example, when the data transmission For PUCCH transmission, the PUCCH carries HARQ feedback information, and the HARQ feedback information indicates a receiving state of downlink Semi-Persistent Scheduling (SPS) release signaling, where the one time unit is the time unit after the second DCI is occupied.
  • SPS Semi-Persistent Scheduling
  • the second DCI is a DCI for indicating SPS release signaling; and, for example, the data transmission is a PUSCH transmission, the one time unit being occupied by the second DCI
  • the network device transmits the second DCI on the first time unit in the subframe with the subframe number 0, and the network device can determine the subframe with the subframe number 1
  • the second DCI the network device may determine that the second time unit in the subframe with the subframe number 2 is the one time unit.
  • the one time unit is a Kth time unit after a time unit occupied by a physical hybrid ARQ indicator channel (PHICH), where K is greater than or equal to 4. Integer.
  • the network device transmits the PHICH to the terminal device.
  • the PUCCH when the data transmission is a PUCCH transmission, the PUCCH carries HARQ feedback information, where the HARQ feedback information indicates a reception status of the PDSCH, where the one time unit is a Kth time unit after a time unit occupied by the PDSCH, where K is An integer greater than or equal to 4.
  • the network device transmits the PDSCH to the terminal device before, after or at the same time as determining the one time unit.
  • the terminal device determines that the transmission resource for transmitting the data may include:
  • the time domain resource occupied by the transmission resource determined by the terminal device in the time domain is one of M time units included in one subframe. Specifically, the terminal device determines the one time unit according to the following method:
  • the terminal device receives the first DCI transmitted by the network device before or at the same time as determining the one time unit.
  • the one time unit is a time unit occupied by the first downlink control information (DCI), and the first DCI may include information used to indicate downlink data transmission; or
  • the terminal device Before determining the one time unit, the terminal device receives the second DCI sent by the network device.
  • the one time unit is the Kth time unit after the time unit occupied by the second DCI, where K is an integer greater than or equal to 4, and the second DCI may include an implicit indication.
  • Information for uplink data transmission is the Kth time unit after the time unit occupied by the second DCI, where K is an integer greater than or equal to 4, and the second DCI may include an implicit indication.
  • the terminal device receives the PHICH sent by the network device before or at the same time as determining the one time unit.
  • the one time unit is a Kth time unit after a time unit occupied by a Physical Hybrid ARQ indicator channel (PHICH), where K is an integer greater than or equal to 4.
  • PHICH Physical Hybrid ARQ indicator channel
  • the terminal device receives the PDSCH sent by the network device.
  • the PUCCH carries HARQ feedback information indicating a reception status of the PDSCH, where the one time unit is a Kth time unit after a time unit occupied by the PDSCH, where K is greater than or equal to 4 The integer.
  • the network device determines a transmission resource for transmitting the data (referred to as a first transmission resource for convenience of later description), and the time domain resource occupied in the time domain is one of M time units included in one subframe. Unit (referred to as the ith time unit here for convenience of description).
  • the network device may further determine a third transmission resource for transmitting the data, where the time domain resource occupied by the third transmission resource in the time domain is the jth time of the M time units included in one subframe. unit.
  • the first transmission resource and the third transmission resource carry the same data. Because in the third transmission resource Repeated transmission of the same data, so can improve the performance of data transmission, thereby increasing the coverage of data transmission.
  • the terminal device determines a transmission resource for transmitting the data (referred to as a first transmission resource for convenience of later description), and the time domain resource occupied in the time domain is M time units included in one subframe.
  • a time unit (referred to herein as the ith time unit for convenience of description).
  • the terminal device may further determine a third transmission resource for transmitting the data, where the time domain resource occupied by the third transmission resource in the time domain is the jth time of the M time units included in one subframe. unit.
  • the first transmission resource and the third transmission resource carry the same data.
  • j i+1, that is, the ith time unit is the previous time unit of the jth time unit.
  • the first transmission resource and the third transmission resource occupy different frequency domain resources, so that the frequency diversity gain can be obtained.
  • the first transmission resource occupies the first time unit in one subframe in the time domain, and the third transmission resource occupies the second time unit in the one subframe in the time domain; or
  • the first transmission resource occupies a third time unit in one subframe in the time domain, and the third transmission resource occupies a fourth time unit in the one subframe in the time domain.
  • the network device may send signaling to the terminal device, where the signaling includes information for indicating the third transmission resource, where the signaling is high layer signaling or physical layer signaling. It should be noted that the determination of the first transmission resource and the first transmission resource does not have a clear timing relationship.
  • the coverage of the transmission can be enhanced, and is particularly applicable to a scenario in which uplink coverage is limited due to limited transmission power of the terminal device.
  • the network device performing data transmission with the terminal device on the determined transmission resource may include:
  • the network device receives the uplink data sent by the terminal device on the transmission resource;
  • the network device sets to the terminal on the transmission resource.
  • the downstream data is sent.
  • the terminal device when the data transmission is uplink data transmission, the terminal device sends uplink data to the network device on the transmission resource; or, when the data transmission is downlink data transmission, the terminal device receives the network on the transmission resource.
  • the downlink data sent by the device when the data transmission is uplink data transmission, the terminal device sends uplink data to the network device on the transmission resource; or, when the data transmission is downlink data transmission, the terminal device receives the network on the transmission resource.
  • the network device When the terminal device supports carrier aggregation, the network device also determines a second transmission resource condition for transmitting the second data, as follows:
  • the network device receives the first uplink data sent by the terminal device on the first transmission resource, and receives the second uplink data on the second transmission resource.
  • the second uplink data sent by the terminal device or
  • the network device sends the first downlink data to the terminal device on the first transmission resource, where the second downlink resource The second downlink data is sent to the terminal device.
  • the terminal device when the first data is the first uplink data and the second data is the second uplink data, the terminal device sends the first uplink data to the network device on the first transmission resource, where the second uplink resource is Sending second uplink data to the network device; or
  • the terminal device receives the first downlink data sent by the network device on the first transmission resource, where the second transmission is performed.
  • the resource receives the second downlink data sent by the network device.
  • the third transmission resource condition for transmitting the data is also determined for the network device, and the step 102 may include:
  • the network device receives the uplink data sent by the terminal device on the first transmission resource and the third transmission resource;
  • the network device When the data transmission is downlink data transmission, the network device sends the downlink data to the terminal device on the first transmission resource and the third transmission resource.
  • the terminal device also determines a third transmission resource condition for transmitting the data, and when the data transmission is uplink data transmission, the terminal device is in the first transmission resource and the third transmission resource. Sending uplink data on the uplink; or, when the data transmission is downlink data transmission, the terminal device receives the downlink data on the first transmission resource and the third transmission resource.
  • An embodiment of the present invention is mainly used by a network device to determine a transmission resource for transmitting the data, and the time domain resource occupied by the transmission resource in the time domain is one of N time domain resources, and any of the N time domain resources
  • the time length of a time domain resource is less than 1 millisecond. Compared with a transmission that can only support one time length equal to 1 millisecond, at least one time domain resource less than 1 ms is introduced, so that the transmission time interval is shortened, which can effectively reduce Data transmission delays to meet the needs of low latency services.
  • FIG. 15 is a network device, which may be used to perform the method shown in FIG. 1 , where the network device includes a processing unit 1501 and a transceiver unit 1502.
  • the processing unit 1501 is configured to determine a transmission resource that transmits the data, where the time domain resource occupied by the transmission resource in the time domain is one of N time domain resources, and any one of the N time domain resources.
  • the time domain resource has a duration of less than 1 millisecond, where N is a positive integer.
  • the transceiver unit 1502 is configured to perform data transmission with the terminal device on the transmission resource determined by the processing unit.
  • the N time domain resources include at least one time domain resource of a time length of 1 symbol, 2 symbols, 3 symbols, 4 symbols, or 1 slot.
  • the time slots include 6 or 7 symbols.
  • the data transmitted by the transceiver unit 1502 includes a physical channel and a physical signal, where the physical signal and the physical channel are respectively located at the Different symbols in the two symbols.
  • the specific process and beneficial effects please refer to the example shown in FIG. 2 above. It should be understood that these cases are merely examples of the embodiments of the present invention, and the present invention is not limited thereto.
  • the 4 symbols include: Symbols for transmitting physical signals and 4- Symbols for transmitting physical channels, Less than 4.
  • the two symbols for transmitting physical signals are located in the middle 2 symbols or the first 2 symbols within the 4 symbols; or when When it is equal to 1, the one symbol for transmitting the physical signal is located in the first symbol or the second symbol in the four symbols.
  • the 3 symbols include: Symbols for transmitting physical signals and 3- a symbol for transmitting a physical channel, Less than 3.
  • the 3 symbols include: Symbols for transmitting physical signals and 3- a symbol for transmitting a physical channel, Less than 3.
  • the two symbols for transmitting physical signals may be located in the first two symbols within the three symbols; or, when When it is equal to 1, the one symbol for transmitting the physical signal is located in the first symbol or the second symbol in the three symbols.
  • the 2 symbols include 1 symbol for transmitting a physical signal, where the 1 symbol for transmitting the physical signal is located.
  • the first symbol or the second symbol within two symbols.
  • the 1 symbol is used to transmit the physical channel.
  • the transmission resource determined by the processing unit 1501 occupies 1 slot in the time domain: when 1 slot contains 7 symbols, the 1 slot includes Symbols used to transmit physical signals and a symbol for transmitting a physical channel, Less than 7; or when 1 slot contains 6 symbols, the 1 slot includes Symbols used to transmit physical signals and a symbol for transmitting a physical channel, Less than 6.
  • the processing resource determined by the processing unit 1501 includes at least two REs, where the data includes a physical signal and a physical channel, and the physical channel and the physical signal are located in different REs.
  • the data includes a physical signal and a physical channel
  • the physical channel and the physical signal are located in different REs.
  • the transmission resource determined by the processing unit 1501 includes at least one short resource block, and any one of the at least one short resource block includes REs occupying continuous frequency in the frequency domain Subcarriers occupy consecutive N sym symbols in the time domain, the N sym being equal to the number of symbols occupied by the transmission resource in the time domain, the N sym sum Is a positive integer; includes any one of the short resource blocks RE for transmitting the physical signal, the The REs for transmitting the physical signal are discontinuously distributed or comb-shaped in the frequency domain, Is a positive integer.
  • the time domain resource occupied by the transmission resource determined by the processing unit 1501 in the time domain is one time unit of M time units included in one subframe, and any one of the M time units Is one of the N time domain resources.
  • any one of the M time units Is one of the N time domain resources.
  • the four time units included in the one subframe are the first time unit, the second time unit, the third time unit, and the fourth time unit, respectively.
  • the four time units included in the one subframe are similar to those in the foregoing method embodiment, and are not described herein again.
  • the four time units included in the one subframe include: for the uplink transmission, when the last symbol in the one subframe is used to transmit the sounding RS SRS, the four time units included in the one subframe are Sorting in the time domain according to the foregoing description, sorting five or sorting seven configurations; or, the four time units included in the one subframe include: when one slot contains 7 symbols, when the physical control format indicates the channel PCFICH bearer Control format indicating CFI or higher layer signaling When the number of PDCCH symbols is 0 or 1, the four time units included in the one subframe are arranged in the time domain according to the order one or the fourth order; or when one slot contains 7 symbols, when the CFI or the high layer signaling indicates the PDCCH When the number of symbols is 2, 3 or 4, the 4 time units included in the one subframe are arranged in the time domain according to the foregoing ordering 2, sorting three or sorting five configurations.
  • the processing unit 1501 is specifically configured to: determine the transmission resource.
  • One of the M time units is occupied in the time domain.
  • the one time unit determined by the processing unit 1501 is a time unit occupied by the first DCI, and the first DCI includes information for indicating downlink data transmission.
  • the one time unit determined by the processing unit 1501 is the Kth time unit after the time unit occupied by the second DCI, where K is greater than or equal to An integer of 4, the second DCI including information for implicitly indicating uplink data transmission.
  • the transceiver unit 1502 is specifically configured to: when the data transmission is uplink data transmission, receive uplink data sent by the terminal device on the transmission resource determined by the processing unit 1501; or when the data transmission is downlink data. At the time of transmission, the downlink data is transmitted to the terminal device on the transmission resource determined by the processing unit 1501.
  • the lengths of the at least two time domain resources of the N time domain resources are unequal.
  • FIG. 15 is a schematic diagram of a possible structure of a network device involved in the foregoing embodiment.
  • the network device includes a processing unit 1501 and a transceiver unit 1502.
  • the processing unit according to the embodiment of the present invention corresponds to
  • the physical device may be a processor, and the physical device corresponding to the transceiver unit involved in the embodiment of the present invention may also be a transceiver.
  • the processor and transceiver only show a simplified design of the network device, in which the network device can include any number of transceivers, processors, controllers, memories, etc., all of which can implement the present invention. Network devices are within the scope of the present invention.
  • FIG. 16 is a schematic diagram of a terminal device, which may be used to perform the method shown in FIG. 1 .
  • the network device includes a processing unit 1601 and a transceiver unit 1602.
  • the processing unit 1601 is configured to determine a transmission resource that transmits the data, where the time domain resource occupied by the transmission resource in the time domain is one of N time domain resources, and the N time domain resources are The length of any one of the time domain resources is less than 1 millisecond, where N is a positive integer;
  • the transceiver unit 1602 is configured to perform data transmission with the network device on the transmission resource determined by the processing unit.
  • the N time domain resources include at least one time domain resource of a time length of 1 symbol, 2 symbols, 3 symbols, 4 symbols, or 1 slot.
  • the one time slot includes six or seven symbols.
  • the data transmitted by the transceiver unit 1602 includes a physical channel and a physical signal, the physical signal and the physical channel. Different symbols located in the at least two symbols, respectively.
  • the specific process and beneficial effects please refer to the example shown in FIG. 2 above. It should be understood that these cases are merely examples of the embodiments of the present invention, and the present invention is not limited thereto.
  • the 4 symbols include: Symbols for transmitting physical signals and 4-described Symbol for transmitting a physical channel, Less than 4.
  • the two symbols for transmitting physical signals are located in the middle 2 symbols or the first 2 symbols within the 4 symbols; or when When it is equal to 1, the one symbol for transmitting the physical signal is located in the first symbol or the second symbol in the four symbols.
  • the 3 symbols include: Symbols for transmitting physical signals and 3-described Symbol for transmitting a physical channel, Less than 3.
  • the 3 symbols include: Symbols for transmitting physical signals and 3-described Symbol for transmitting a physical channel, Less than 3.
  • the one symbol for transmitting the physical signal is located in the first symbol or the second symbol in the three symbols; or, when When equal to 2, the two symbols for transmitting physical signals may be located in the first two symbols within the three symbols;
  • the 2 symbols include 1 symbol for transmitting a physical signal, and the 1 symbol is used for transmitting a physical signal.
  • the symbol is located in the first symbol or the second symbol within the two symbols.
  • the 1 symbol is used to transmit a physical channel.
  • the transmission resource determined by the processing unit 1601 occupies 1 slot in the time domain: when 1 slot contains 7 symbols, the 1 slot includes Symbols used to transmit physical signals and Symbol for transmitting a physical channel, Less than 7; or when 1 slot contains 6 symbols, the 1 slot includes Symbols used to transmit physical signals and Symbol for transmitting a physical channel, Less than 6.
  • the foregoing solution from the time domain describes that the N time domain resources may include at least one symbol, two symbols, three symbols, four symbols, or one slot.
  • a time domain resource, the 1 time slot may include 6 or 7 symbols, and another case is introduced from the perspective of a frequency domain, that is, the data may include a physical signal and a physical channel, and the physical channel And the physical signal is located in a different RE of the transmission resource.
  • the data may include a physical signal and a physical channel, and the physical channel And the physical signal is located in a different RE of the transmission resource.
  • FIG. 5, FIG. 6, FIG. 7, FIG. 8, FIG. 9, FIG. 10, FIG. 11, FIG. 12 or FIG. 13 it can be understood that these cases are only the present invention.
  • the invention includes and is not limited thereto.
  • the transmission resource determined by the processing unit 1601 includes at least one short resource block, and any one of the at least one short resource block includes: REs occupying continuous frequency in the frequency domain Subcarriers occupying consecutive N sym symbols in the time domain, the N sym being equal to the number of symbols occupied by the transmission resource in the time domain, the N sym sum Is a positive integer; includes any one of the short resource blocks RE for transmitting the physical signal, The REs for transmitting the physical signals are discontinuously distributed or comb-shaped in the frequency domain, Is a positive integer.
  • the time domain resource occupied by the transmission resource determined by the processing unit 1601 in the time domain is one of M time units included in one subframe, and any one of the M time units.
  • the time unit is one of the N time domain resources.
  • the four time units included are the same as those in the foregoing method embodiments, and are not described here.
  • the four time units included in the one subframe include: for uplink transmission, when the last symbol in the one subframe is used to transmit the sounding RS SRS, the four subframes include four
  • the time units are sorted in the time domain according to the foregoing description by four, sorted five or sorted seven configurations.
  • the four time units included in the one subframe include: when one slot contains 7 symbols, when the physical control format indicates that the control format of the channel PCFICH bearer indicates that the number of PDCCH symbols indicated by the CFI or the high layer signaling is When 0 or 1, the four time units included in the one subframe are arranged in the time domain according to the order one or the fourth order; or when one slot contains 7 symbols, when the number of PDCCH symbols indicated by the CFI or the high layer signaling is 2, 3 or 4, the four time units included in the one subframe are arranged in the time domain according to the foregoing ordering, sorting three or sorting five configurations.
  • the processing unit 1601 is specifically configured to: determine that the transmission resource occupies one time unit of the M time units in the time domain.
  • the location of the transmission resource is limited to one subframe, and thus is not distributed over two subframes, thereby avoiding the complexity of increasing the scheduler of the device.
  • the one time unit determined by the processing unit 1601 is a time unit occupied by the first DCI, and the first The DCI includes information for indicating downlink data transmission; or, when the data transmission by the transceiver unit 1602 is uplink data transmission, the one time unit determined by the processing unit 1601 is after the time unit occupied by the second DCI.
  • the transceiver unit 1602 is specifically configured to: when the data transmission is uplink data transmission, receive the uplink data sent by the terminal device on the transmission resource determined by the processing unit 1601; or, when When the data transmission is downlink data transmission, the downlink data is sent to the terminal device on the transmission resource determined by the processing unit 1601.
  • the time lengths of at least two of the N time domain resources are not equal. This makes it possible to occupy time domain resources more efficiently.
  • FIG. 16 is a schematic diagram of a possible structure of a terminal device involved in the foregoing embodiment, where the terminal device includes a processing unit and a transceiver unit, wherein, in particular, the entity corresponding to the processing unit involved in the embodiment of the present invention is required.
  • the device may be a processor, and the physical device corresponding to the transceiver unit involved in the embodiment of the present invention may also be a transceiver. It can be understood that the processor and the transceiver unit only show a simplified design of the terminal device. In practical applications, the terminal device can include any number of transceivers, processors, controllers, memories, etc., and all can implement the present invention.
  • the terminal devices are all within the scope of the present invention.
  • the steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware, or may be implemented by a processor executing software instructions.
  • the software instructions may be comprised of corresponding software modules that may be stored in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable hard disk, CD-ROM, or any other form of storage well known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in the user equipment.
  • the processor and the storage medium may also reside as discrete components in the user equipment.
  • the functions described herein can be implemented in hardware, software, firmware, or any combination thereof.
  • the functions may be stored in a computer readable medium or transmitted as one or more instructions or code on a computer readable medium.
  • Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another.
  • a storage medium may be any available media that can be accessed by a general purpose or special purpose computer.

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Abstract

La présente invention concerne le domaine des communications mobiles, et en particulier une technologie de détermination de ressources de transmission dans un système de communication sans fil. Dans un procédé de transmission de données, un dispositif réseau détermine les ressources de transmission utilisées pour transmettre des données, et transmet des données avec un dispositif terminal sur les ressources de transmission déterminées, une ressource de domaine temporel occupée par les ressources de transmission dans un domaine temporel étant l'une de N ressources de domaine temporel et la durée de l'une quelconque des N ressources de domaine temporel étant inférieure à 1 milliseconde. Par utilisation du procédé, le retard de transmission de données peut être efficacement réduit, et par conséquent des exigences de services à faible retard peuvent être satisfaites.
PCT/CN2015/090556 2015-09-24 2015-09-24 Procédé et appareil de transmission de données WO2017049531A1 (fr)

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CN201580083025.5A CN108029019B (zh) 2015-09-24 2015-09-24 数据传输方法及装置
EP20203015.1A EP3840447B1 (fr) 2015-09-24 2015-09-24 Procédé et appareil de transmission de données
BR112018005804-1A BR112018005804B1 (pt) 2015-09-24 2015-09-24 Dispositivo de rede, dispositivo terminal, método de transmissão de dados e meio de armazenamento legível por computador
CN202110187607.5A CN113037447B (zh) 2015-09-24 2015-09-24 数据传输方法及装置
RU2018114960A RU2682916C1 (ru) 2015-09-24 2015-09-24 Способ и устройство передачи данных
AU2015409983A AU2015409983A1 (en) 2015-09-24 2015-09-24 Data transmission method and apparatus
CN201910407100.9A CN110224800B (zh) 2015-09-24 2015-09-24 数据传输方法及装置
EP15904418.9A EP3343969B1 (fr) 2015-09-24 2015-09-24 Procédé et appareil de transmission de données
PCT/CN2015/090556 WO2017049531A1 (fr) 2015-09-24 2015-09-24 Procédé et appareil de transmission de données
US15/933,633 US10880909B2 (en) 2015-09-24 2018-03-23 Data transmission method and apparatus
AU2020201895A AU2020201895B2 (en) 2015-09-24 2020-03-16 Data transmission method and apparatus
US17/100,558 US11601958B2 (en) 2015-09-24 2020-11-20 Data transmission method and apparatus

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